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Researchers have achieved an efficiency record for transparent solar cells, paving the way for skyscraper windows to serve as power sources. A team from the University of Michigan used an organic, carbon-based design to transform sunlight into electricity with an efficiency rate of 8.1 per cent. Commercial solar cells, which are typically made using silicon rather than carbon, tend to have an efficiency rate of between 14 and 19 per cent. "Windows, which are on the face of every building, are an ideal location for organic solar cells because they offer something silicon can't, which is a combination of very high...

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New solar and onshore wind energy facilities have now reached parity with average wholesale prices in many places around the world.That’s according to Bloomberg New Energy Finance (BNEF), which says the renewable energy sources can now generate electricity at a cost equal to or lower than wholesale prices in California and parts of Europe.It also notes their levelised costs are now below the average regulated coal power price in China and highlights its own global benchmark levelised cost figures for onshore wind and solar projects financed in the last six months totalled $47/MWh (£36.5) and $51/MWh (£39.6) respectively.   This...

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